1 2 3 4 5 6 7 8 9 10 11 12
Gnd 12v Aux C-
Dig
In
Mag
Out
Pts
Stg
Lim
Nit
Ret
Mag
In Gnd Knk
Gnd
J&S Electronics
13925 Parkway Dr. Garden Grove, CA 92843
(714) 534-6975 www.jandssafeguard.com
SafeGuard main harness connector at rear of unit
Ignition Coil
+ -
12v from key
Distributor
(Points or
OEM
Electronic)
Bosch Knock Sensor
1 2 3 4 5 6 7 8 9 10 11 12
Gnd 12v Aux C-
Dig
In
Mag
Out
Pts
Stg
Lim
Nit
Ret
Mag
In Gnd Knk
Gnd
SafeGuard main harness connector at rear of unit
Ignition Coil
+ -
12v from key
Distributor
(Points or
OEM
Electronic)
Bosch Knock Sensor
Type + -
Ford Orange Violet
Chrysler Orange Violet
GM HEI White Green
MSD Violet Green
Mag Pickup Color Codes
MSD 6
MSD Black
MSD Orange
Green (NC)
Violet
Figure 3 “Mag in, Points out”
Figure 4 “Mag in, Mag out”
Triggering from Magnetic Pickup
Red
Black
Blue
Red
Black
Note: Shield and black are connected under shrink
sleeving. Do not connect shield at other end.
Note: Shield and black are connected under shrink
sleeving. Do not connect shield at other end.
Do Not Use Solid Core Plug Wires
Magnetic pickup
